Which version of Plug-in can be used with which version of WAS?
Resolving the problem
Supported combinations of IBM HTTP Server, WebSphere Application Server, and the WebSphere WebServer Plug-in
There are a variety of issues surrounding support of mixed releases of IBM HTTP Server (IHS), WebSphere Application Server (WAS), and the WebSphere Web Server Plug-in (WAS Plugin). This document only refers to the IBM HTTP Server (powered by Apache) on AIX, HP-UX, Linux, Solaris, Windows, and z/OS (not "IBM i").
In general, the recommended configuration is to use all three components from the same release. However, there are a variety situations where using other combinations is required.
Note: Customer and product support is only provided when all components in use have a support entitlement.
Supported, UnSupported, and other configurations
For reference, we categorize support into three categories: supported, unsupported, and other: WebSphere Application Server Support Statement
- IHS 7.0 + Plugin 7.0 was supported with WAS 8.0, 8.5, and 8.5.5 as a transitional measure for users of third-party IHS modules that did not support IHS 8.0 or later in a timely manner. At this time, well past the time frame that can reasonably considered transitional, this configuration should only be of historical interest. IHS 7.0 was released in 2008 and has no support for some important TLS features such as TLS1.2 and AEAD ciphers.
- IBM HTTP Server 8.5 used as part of z/OS Ported Tools is additionally supported with the 8.0 Plug-in. While this combination is supported, using the corresponding release is strongly recommended.
- IBM HTTP Server 9.0 included with z/OS V2R2 (and later) is additionally supported with the 8.0 and 8.5 Plugins. While this combination is supported, using the corresponding release is strongly recommended (when available).
- IHS 8.0 or later cannot be used with Plugin 7.0 or earlier (distributed platforms, incompatible GSKit major release)
- IHS 7.0 or earlier cannot be used with Plugin 8.0 or later (distributed platforms, incompatible GSKit major release)
- If WAS is a higher releases than the Plugin, the generated XML might trigger warnings at startup.
Supported combinations of WAS and and the WAS Plugin
A given release (V.R.M.F) of the WAS Plugin can route to servers up to N-2 versions prior, but only as recent as the corresponding release.
For example, an 8.0 Plugin can front-end servers from 8.0, 7.0, or 6.1 whether they're all from a single release or in a mixed cell. Application servers from 8.5 or 8.5.5 would not be a supported configuration.
Supported configurations of Web Servers and the WAS Plugin
Given a compatible Plugin has been selected based on WAS release requirements, The release (V.R.M.F) of IBM HTTP Server used must match the Plugin release exactly.
Third-party webservers are only a supported configuration if they are explicitly listed in the supporting software documentation for the WAS release.
These are combinations with known technical problems.
Any combination not explicitly addressed above is an "other configuration". These configurations are not tested or recommended.
There is no required relationship between IHS, Plugin, and WAS fixpack (V.R.M. F) levels, but staying current is strongly recommended. Furthermore, using levels contemporary (but not necessarily identical) with one another is also strongly recommended.
- 20150511: Previous versions of this document were ambiguous with respect to mixed cells vs cells from a previous release.
- 20150511: Previous versions of this document permitted future releases of IHS + Plugin only under specific enumerated circumstances.
- 20150511: Permit IHS on z/OS to use previous releases of the WAS Plug-in.
|Application Servers||WebSphere Application Server||Plug-in (remote) Install||AIX, Linux, Solaris, Windows||7.0, 6.1.1, 6.1, 6.0.1, 6.0, 5.1|
|Application Servers||Runtimes for Java Technology||Java SDK|